<script setup>
import {ref, reactive} from 'vue'
// 响应式数据,保存用户输入的表单信息
let loginUser = reactive({
  username: '',
  userPwd: ''
})

// 响应式数据,保存校验的提示信息
let usernameMsg = ref('')
let userPwdMsg = ref('')

// 校验用户名的方法
function checkUsername() {
  // 定义正则
  const usernameReg = /^[a-zA-Z0-9]{5,10}$/;
  // 校验用户名
  if (!usernameReg.test(loginUser.username)) {
    // 格式不合法
    usernameMsg.value = "格式有误"
    return false
  }
  usernameMsg.value = "ok"
  return true
}

// 校验密码的方法
function checkUserPwd() {
  // 定义正则
  const passwordReg = /^[0-9]{6}$/;
  // 校验密码
  if (!passwordReg.test(loginUser.userPwd)) {
    // 格式不合法
    userPwdMsg.value = "格式有误"
    return false
  }
  userPwdMsg.value = "ok"
  return true
}
</script>

<template>
  <div>
    <h3 class="ht">请登录</h3>
    <table class="tab" cellspacing="0px">
      <tr class="ltr">
        <td>请输入账号</td>
        <td>
          <input class="ipt"
                 type="text"
                 v-model="loginUser.username"
                 @blur="checkUsername()">
          <span id="usernameMsg" v-text="usernameMsg"></span>
        </td>
      </tr>
      <tr class="ltr">
        <td>请输入密码</td>
        <td>
          <input class="ipt"
                 type="password"
                 v-model="loginUser.userPwd"
                 @blur="checkUserPwd()">
          <span id="userPwdMsg" v-text="userPwdMsg"></span>
        </td>
      </tr>
      <tr class="ltr">
        <td colspan="2" class="buttonContainer">
          <input class="btn1" type="button" value="登录">
          <input class="btn1" type="button" value="重置">
          <router-link to="/regist">
            <button class="btn1">去注册</button>
          </router-link>
        </td>
      </tr>
    </table>
  </div>
</template>

<style scoped>
.ht {
  text-align: center;
  color: cadetblue;
  font-family: 幼圆, serif;
}

.tab {
  width: 500px;
  border: 5px solid cadetblue;
  margin: 0 auto;
  border-radius: 5px;
  font-family: 幼圆, serif;
}

.ltr td {
  border: 1px solid powderblue;
}

.ipt {
  border: 0;
  width: 50%;
}

.btn1 {
  border: 2px solid powderblue;
  border-radius: 4px;
  width: 60px;
  background-color: antiquewhite;
}

#usernameMsg, #userPwdMsg {
  color: gold;
}

.buttonContainer {
  text-align: center;
}
</style>
